Vernier Software and Technology
Vernier Software & Technology
Tech Info Library

My photogates don't work with the PHYSICS calculator program

Although the PHYSICS program was written for use with TI graphing calculators and the original CBL, it has been adapted to work with the CBL 2 and LabPro interfaces. The newest version of PHYSICS will work with any of these interfaces and appears virtually the same as you use it. The use of photogates is different depending on the type of interface that is being used. The program will advise you which channel to connect the photogate. CBL uses photogates as analog sensors and so requires that the photogate be plugged into CH1. LabPro and CBL2 use photogates as digital sensors, so they require the photogate to be plugged into the DIG/SONIC channel (DIG/SONIC1 on LabPro).

-The CBL will only work with photogates that are plugged into analog CH1 on the top of the unit. This requires the photogate to have a CBL-P (single photogate) or a CBL-2P (dual photogate) adapter.

-The LabPro and CBL2 will only work with photogates that are plugged into the DIG/SONIC1 or DIG/SONIC2 (LabPro only) ports on the right side of the unit. This requires the photogate to have a PG-BTD cable, DG-BTD adapter, or a HMP-BTD adapter (for home-made photogates). The CBL-P and CBL-2P will not work with the LabPro or CBL 2.

For LabPro or CBL 2, there is a separate program called DataGate that will work with the LabPro and CBL 2 (not the CBL). It is also available from our website:

TIL 2667: Can I use Vernier Photogates (VPG-BTD) with TI calculators?

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